Level I |
Mucosal or submucosal injury without mediastinal emphysema and esophageal injury |
Level II |
Lesion extending to the muscular wall with subcutaneous or mediastinal emphysema without esophageal injury or mediastinitis |
Level IIIA |
Complete laceration with esophageal or mediastinal soft-tissue herniation without esophageal injury or mediastinitis |
Level IIIB |
Any laceration with esophageal injury or mediastinitis |